Design, modeling, and optimization of mechanically reconfigurable aperture antennas
- 7 August 2002
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 50 (5), 628-637
- https://doi.org/10.1109/tap.2002.1011228
Abstract
The work in this study develops the framework for placement and actuation of novel reconfigurable dual-offset contour beam reflector antennas (DCBRA). Toward that end, the methodology for the antennas' design is defined. In addition, two separate optimization problems are stated and solved: actuator position optimization and actuation value optimization. For the former, a method termed as greatest error suppression method is proposed where the position of each actuator is decided one by one after each evaluation of the error between the desired subreflector shape and the actual subreflector shape. For the second problem, a mathematical analysis shows that there exists only one optimal configuration. Two optimization techniques are used for the second problem: the simulated annealing algorithm and a simple univariate optimization technique. The univariate technique always generates the same optimal configuration for different initial configurations and it gives the low bound in the evaluation of the error. The simulated annealing algorithm is a stochastic technique used to search for global optimum point. Finally, as an example the results of the proposed optimization techniques are presented for the generation of a subreflector shape corresponding to the geographical outline of Brazil.This publication has 12 references indexed in Scilit:
- Reconfigurable contour beam generation using a smart subreflector antenna systemPublished by SPIE-Intl Soc Optical Eng ,2000
- Reconfigurable contour beam reflector antennas using adjustable subreflector and adjustable single feedMicrowave and Optical Technology Letters, 1999
- Smart aperture antennasSmart Materials and Structures, 1996
- Neural control of smart electromagnetic structures [patch antennas]IEEE Transactions on Aerospace and Electronic Systems, 1995
- A generalized diffraction synthesis technique for high performance reflector antennasIEEE Transactions on Antennas and Propagation, 1995
- Novel Coordinate System and Rotation Transformations for Antenna ApplicationsElectromagnetics, 1995
- Design and performance of a reconfigurable mesh reflector antenna. Part 1: Antenna designIEE Proceedings H Microwaves, Antennas and Propagation, 1991
- A piecewise deformable subreflector for compensation of Cassegrain main reflector errorsIEEE Transactions on Antennas and Propagation, 1988
- Bimorph piezoelectric flexible mirror: graphical solution and comparison with experimentJournal of the Optical Society of America, 1983
- The design of correcting secondary reflectorsIEEE Transactions on Antennas and Propagation, 1976